Machine for making cardboard and similar boxes



Nov. 20, 1928. I 1,692,534

N. P. ANDREW ET AL MACHINE FOR MAKING CARDBOARD AND SIMILAR BOXES Fild Dec. 22, 1926 2 Sheets-Sheet 1 QVWMJLM/ WNW MUM QJEMOQMW Nov. 20, 1928. 1,692,534

N. ANDREW ET AL MACHINE FOR MAKING CARDBOARD AND SIMILAR BOXES Filed Dec. 22, 1926 2 Sheets-Sheet 2 A/ J A J Patented Nov. 20, 1928.

UNITED STATES PATENT oFrIcE.

NICHOLAS PENTREATH ANDREW, WILLIAM LESLIE MACFIE, AND ROBERT WELLIAM ROSE, OF FINSBUBY, LONDON, ENGLAND, ASSIGNORS T9 NICHOLAS PEN'IREATH ANDREW AND GEORGE ERNEST SUTEB, COPARTNEBS, TRADING AS ANDREW &

SUTER, OF FINSBUR-Y, ENGLAND.

MACHINE. FOR MAKING CARDBOARD AND SIMILAR BOXES.

Application filed December 22; 1926, Serial No 156,292,

In some machines of the kind above referred to the strip is drawn from a spool or reel through a folder which imparts to it an inverted V-section, by means of a reciprocatory pivoted gripper which in being moved forward by cam actuated lever and link mechanism sometimes against the action of a spring, advances the strip in its folded condition along guiding wires so as to cause the desired length or amount of the strip to be supplied to the anvil ready to be cut and applied to the box corner, the extent of forward movement of the gripper-being deter--' mined by the length of anvil exposed under the plunger for which purpose a suitable adjusting device is provided to vary the positions of the anvil and the gripper according to the length of strip to be applied to the box corner.

The chief object of the present invention is to provide an improved and simplified construction of strip supplying or feeding mechanism which avoids the use of the pivoted gripper and the guiding wires (which latter are liable to be damaged) as well as the cam actuated lever and link operating mechanism.

According to this invention, feed rollers are provided for advancing the strip to the anvil and intermittent feeding movement imparted to these rollers by means of gearing operated by a toothed rack or the like.

The said rack can be adjusted to vary the extent of feeding or advancing movement imparted to the said rollers according to the length of the anvil exposed and to the length of strip to be cut and applied tothe box corner. The toothed rack may be recipro cated by a vertically movable rod that is actuated by an eccentric on the usual operating shaft. through the medium of a pivoted arm to which the said rod is suitably articw and in Great Britain March 15, 1926.

lated, and the connection of the rack to the said pivoted arm is such that it can be moved towards or away from the pivot of the said arm so as to vary the extent to which the rack is vertically moved-by the aforesaid operating rod and therefore the extent of movement imparted to the gearing and the feed rollers.

In order that the invention may be clearly understood and readily carried into effect, the same will now be more fully described with reference to theaccompanying draw ings, in which Figure 1 is a sectional view of a corner staying machine of the kind hereinbefore rerel-red to with one construction of the improved feeding mechanism applied thereto.-

Figure 2 is a sectional plan view taken approximately on the'line 2--2 of Figure 1.

' Figure 3 is a sectional view taken approximately on the line ST- 3 ofFigure l.

I Figure 4 is'an end view of the anvil and theplunger. i

A represents the anvil which at its upper part is of angular or inverted V-formation so that a box can be placed thereon corner-Wise as shewnin dotand dash linesin Figure ,4,

in orderto have a stripof gummedpaper applied along each angular edge or corner. B is the plunger with which is associated a knife or shearing means that cuts the required length of the gummed strip,'the said plunger and the knife being simultaneouslyoperated so that the plunger applies the cut strip to the box corner immediately it is cut by the knife. C represents the operating shaft which effects the necessary movements of the plunger and the knife and is also employed to actuate the feeding mechanism that advances the gummed strip forward as re quired. The gummcd strip ispassed through a folder and a moistening tank in any usual or suitable manner and it. is advanced in folded or V-form on to the anvil by means of feed rollers D and E supported on an extension Aof the anvil A by a bIOckor the like A suitably secured to the said extension A; F represents the vertically movable rack employed for imparting movement to gearing that operates the feed rollers D and E hereinafter described.

The said rack F is vertically movable in a guide in or on the block A and its upper end is provided with a pin F that fits in a longi tudinally disposed slot in a pivoted arm G to which an operating rod H is suitably connected, the said rod being adjustably secured to a strap H surrounding an eccentric I on the operating shaft C. The arm G is pivoted at G to a bracket or other fixed part on the machine and its other end is free to move in a vertical plane in a guide G fixed on part of the machine. The rotation of the operating shaft 0 and the eccentric I causes the rod H to .be vertically moved with the result that the pivoted arm G is raised and lowered on its pivot pin G thereby imparting vertical reciprocation to the aforesaid rack 'F. The position of the pin F within and along the slot in the pivoted arm G can be varied so as to be located at difierent distances from the pivot pin G and this adjustment of the rack F and its pin F in relation to the pivot pin G is effected by longitudinally moving the aforesaid anvil A and its extension A with the block A in any suitable or usual manner. The position of the anvil i. e. the length which is exposed under the plunger, is chosen to suit the depth of box and the length of gummed strip to be applied at the box corners and according to the length of anvil which is required and which is exposed under the plunger so the rack pin F is positioned in the slotted arm G in proper relation to the pivot pin G of this arm, so that the extent of operative stroke or movement of the rack F can be va ried in order to impart different extents of rotary movement to the feed rollers for advancing the required length of the gummed strip to the upper part of the anvil. The said rack F engages with a pinion J which through a free wheel or clutch device K drives a gear wheel or ring L in mesh with a pinion M associated with a reverse free wheel or clutch device N on the spindle D of the lower freed roller D, which spindle carries a gear wheel 0 for engaging a gear wheel P on the spindle E of the upper feed roller E.

The clutch device K enables the advancing movement to be imparted to the feed rollers D and E through the aforesaid gearing when the rack F is moved downwardly and the other clutch device N prevents the feed rollers from being rotated in the reverse direction during the upward movement and inoperative stroke of the aforesaid rack. The upper feed roller E and its gear wheel P are earried by an arm E pivoted on the said block A which arm E is under the influence of a spring E surrounding a. fixed rod having an adjustable nut E" for varying the spring pressure exerted on the said arm E and the pressure with which the upper feed roller E bears on the lower feed roller D. As shewn in Fig ure 3, the lower feed roller D is of angular or. V-form at its periphery and fits in a V-shaped peripheral groove on the upper feed roller E so as to suit the V-shaped formation or condition of the gummed strip which is drawn from the folder and the moistening tank. A suitable guide may be located near the feed rollers D and E, so as to maintain the strip in its proper folded form prior to passing between the rollers. The advancing movement of the feed rollers is automatically regulated to provide the correct length of gummed strip to be applied to the box, by adjusting the position of the anvil so as to vary the position of the rack in the slotted arm G in order to increase or decrease the extent of operative movement imparted to the rack E by the aforesaid operating rod H. The operating rod H may be adjustably secured to the aforesaid strap H and in the example shewn the rod H which passes through a lug H on the strap H is provided with a fixed stop H above this lug and with an adjustable sleeve or collar H below the lug so that by manip ulating the sleeve or collar H slight variations in the extent of vertical movement of the rod H and the slotted arm G connected thereto can be effected, thus enabling the rack l? to be vertically adjusted to vary its stroke in addition to the adjustment which can be made by moving the aforesaid anvil A and the block A in which the rack is fitted as here inbefore described.

hat we claim and desire to secure by Letters Patentof the United States is 1. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to, comprising feed rollers for advancing the strip, gearing for actuating said rollers, a toothed rack for actuating said gearing, means for reciprocating the said toothed rack, means whereby the advancing movement is rendered intermittent, means for varying the position of the anvil in relation to a plunger that applies the strip to the box corner and means whereby the said adjustment of the anvil varies the extent of movement of the toothed rack in order to impart a feeding movementthatadvances a length of strip to suit the position of the anvil.

2. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to, comprising feed rollers for advancing the strip, gearing for actuating said rollers, a toothed rack for actuating said gearing, a pivoted arm articulated to said rack, means for angularly moving said arm to reciprocate said rack and means for causing the adjustment of the anvil to vary the stroke of the toothed rack, thereby changing the extent of feeding movement of the strip.

3. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to, comprising feed rollers for advancing the strip, gearing for actuating said rollers, atoothed rack for actuating said gearing, a pivoted arm articulated to said rack, means.

for angularly moving said arm to reciprocate said rack and means whereby the position of the toothed rack can be varied in relation to the pivot of the said arm.

4. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to, comprising feed rollers for advancing the strip, gearing for actuating said rollers, a toothed rack for actuating said gearing, a pivoted arm articulated to said rack, means for a-ngularly moving said arm to reciprocate said rack, means'for varying the position of the anvil to 'suit dilferentsizes of boxes and means whereby the adjustmentof the anvil alters the position of the rack in relation to the pivot of the said arm in order to vary the length of stroke of the said rack.

5. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to comprising feed rollers for advancing the strip, gearing for actuating the same, a toothed rack for actuating said gearing, means whereby an intermittent advancing movement is produced, means for adjusting the anvil, a guide block movable with said anvil in which block the said rack is reciprocated, a pivoted arm for engaging and reciprocating said rack and means whereby the rack can move along the said arm to alter its position in relation to the pivot of the said arm.

6. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to, comprising feed rollers for advancing the strip, gear wheels associated with said rollers, a reciprocating rack for actuating said gear wheels, means for reciprocating said rack, clutch means which enable the advancing movement to be imparted to the feed rollers on one stroke only of the said rack, and means for causing the adjustment of the anvil to vary the stroke of the toothed rack, thereby changing the extent of the feedin movement of the strip.

7 Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to, comprising a pair of feed rollers, spindles on which said rollers are mounted, gear wheels on. said spindles and meshing together, gearing for actuating one of said spindles, a toothed rack for operating said gearing, clutch devices whereby advancing movement is imparted to the rollers on one stroke only of said rack, a pivoted arm to which said rack is connected, means for moving said arm to reciprocate the rack and means for adjusting the position of said rack in relation to the pivot of said arm.

8. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to,

comprising feed rollers for advancing the strip, earing for actuating said feed rollers, atoothed rack for actuating said gearing, clutches associated with'said gearing for enabling the advancing movement to be effected on one stroke only of said rack, a pivoted arm connected to said rack, means whereby said rack may be-moved whilst connected to said arm'to alter its position in relation to the pivot'of said arnrand' means for angularly moving the arm to reciprocate the rack.

9. Feeding mechanism for advancing. a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to, comprising feed rollers, gearing associated therewith, a reciprocating toothed rack for operating said gearing, clutches for enabling the advancing movement to be imparted to the rollers on one stroke only of said rack, an'exten'sion on said anvil, a block on said extension, the said rollers and other parts being carried on said block in which latter the said rack is adapted to be reciprocated, a pivoted arm connected to said rack in such manner that the said blockcan be moved to varythe position of the rack in relation tothe pivot of said arm and means for angularly moving said arm to reciprocate said rack.

10. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinloefore referred to,

comprising feed rollers, gearing associated therewith, a reciprocating toothed rack for operating said gearing clutches for enabling the advancing movement to be imparted to the rollers on one stroke only of said rack, an extension on the anvil, a block on said extension, the said rollers and other parts being carried on said block in which latter the said rack is adapted to be reciprocated, a pivoted arm connected to said rack in such manner that the said block can be moved to vary the position of the rack in relation to pivot of said arm, an operating shaft, an eccentric on said shaft, a connecting rod operated by said eccentric and attached to said pivoted arm so as to angularly move the latter and efii'eot reciprocation of the toothed rack.

11. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to, comprising a pair of feed rollers, the upper one of which is carried on an adjustable member, gear wheels on shafts or the like carrying said rollers, gearing and clutches associated with said rollers, a toothed rack for actuating said gearing, said clutches enabling the advancing movement to be imparted to the rollers on one stroke only of the rack, means for moving the rack when the anvil is adjusted in relation to the pivot of an arm to which the rack is connected, an operating shaft and eccentrically operated actuating mechanism for angularly moving said arm.

12. Feeding mechanism for advancing a strip to the cutter and anvil of a box corner staying machine as hereinbefore referred to, comprising feed rollers for advancing the strip, gearing for actuating said rollers, a toothed rack for actuating said-gearing to impart advancing movement on one stroke only, a pivoted arm connected to said rack, means for adjusting the position of said rack in relation to said pivot, an operating shaft, an eccentric on said shaft, a rod on said eccentric and connected to said arm to angularly move the latter and reciprocate the said rack.

13. Feeding mechanism for advancing a strip to the cutter and anvil of a box-corner staying machine of the class described, comprising feed rollers for advancing the strip, gearing for actuating the said rollers, a toothed rack for actuating the said gearing, an angularly movable arm for actuating the 20 said toothed rack, and means movable With the said anvil for carrying the said rack, said rack remaining in position to be operated by said angularly movable arm in any of its positions.

14:. Feeding mechanism for advancing a strip to the cutter and the adj ustableanvil of a box-corner staying machine of the class described, comprising feed rollers for advancing the strip, gearing for actuating said rollers, a toothed rack for actuating said gearing, an angularly movable arm having a slot therein for actuating the toothed rack, and means mounted on the said anvil for carrying the said rack, the upper end of said rack being fitted in the said slot to permit movement of the rack along the said angularly movable arm When the anvil is adjusted. NICHOLAS PENTREATH ANDREW; WILLIAM LESLIE MACFIE.

ROBERT WILLIAM ROSE; 

